Drive Switch Input Circuit
What does P0853 mean?
The P0853 code means the vehicle's onboard diagnostic system has detected: Drive Switch Input Circuit. This is a moderate severity code.
Common Symptoms
- Check Engine Light illuminated
- Transmission does not recognize Drive selection
- Gear indicator may not show D
- Delayed or no engagement when shifting to Drive
Probable Causes (Ranked by Likelihood)
- Faulty transmission range sensor or drive switch Very High
- Wiring fault in drive switch input circuit High
- Shift linkage out of adjustment Moderate
- TCM input circuit malfunction Low
Step-by-Step Diagnostic Procedure
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Monitor transmission range sensor data with a scan tool while selecting Drive
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Check shift linkage adjustment at the transmission
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Inspect wiring and connector at the range sensor for damage
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Test range sensor resistance values in the Drive position
Frequently Asked Questions
Can a linkage adjustment fix P0853?
Yes, if the shift linkage is out of adjustment, the range sensor may not correctly detect the Drive position. Adjusting the linkage is often a simple fix.
Will the car still move with P0853?
In many cases the transmission will still engage Drive mechanically, but the TCM may default to a safe shift strategy or limp mode because it cannot confirm Drive is selected.
Is the range sensor expensive to replace?
The sensor itself is typically $50 to $150. Labor depends on its location, with most being accessible from outside the transmission.